/* JavaScript Bible, Fourth Edition by Danny Goodman
John Wiley & Sons CopyRight 2001 */
<HTML> <HEAD> <TITLE>User Preferences</TITLE> <SCRIPT LANGUAGE="JavaScript"> // Close the dialog function closeme() { window.close() } // Handle click of OK button function handleOK() { var returnFunc = window.dialogArguments returnFunc(getFormData()) closeme() } // Handle click of Apply button function handleApply() { var returnFunc = window.dialogArguments returnFunc(getFormData()) } // Handle click of Cancel button function handleCancel() { window.returnValue = "" closeme() } // Generic function converts form element name-value pairs // into an array
function getFormData() { var form = document.prefs var returnedData = new Array() // Harvest values for each type of form element for (var i = 0; i < form.elements.length; i++) { if (form.elements[i].type == "text") { returnedData[form.elements[i].name] = form.elements[i].value } else if (form.elements[i].type.indexOf("select") != -1) { returnedData[form.elements[i].name] = form.elements[i].options[form.elements[i].selectedIndex].value } else if (form.elements[i].type == "radio") { returnedData[form.elements[i].name] = form.elements[i].value } else if (form.elements[i].type == "checkbox") { returnedData[form.elements[i].name] = form.elements[i].value } else continue } return returnedData } // Initialize by setting form elements from passed data function init(currPrefs) { if (currPrefs) { var form = document.prefs if (currPrefs["name"]) { form.name.value = currPrefs["name"] } if (currPrefs["bgColor"]) { setSelected(form.bgColor, currPrefs["bgColor"]) } if (currPrefs["textColor"]) { setSelected(form.textColor, currPrefs["textColor"]) } if (currPrefs["h1Size"]) { setSelected(form.h1Size, currPrefs["h1Size"]) } } } // Utility function to set a SELECT element to one value function setSelected(select, value) { for (var i = 0; i < select.options.length; i++) { if (select.options[i].value == value) { select.selectedIndex = i break } } return } // Utility function to accept a press of the // Enter key in the text field as a click of OK function checkEnter() { if (window.event.keyCode == 13) { handleOK() } } </SCRIPT> </HEAD> <BODY BGCOLOR="#eeeeee" onLoad="init()"> <H2>Web Site Preferences</H2> <HR> <TABLE BORDER=0 CELLSPACING=2> <FORM NAME="prefs" onSubmit="return false"> <TR> <TD>Enter your first name:<INPUT NAME="name" TYPE="text" VALUE="" SIZE=20 onKeyDown="checkEnter()"> </TR> <TR> <TD>Select a background color: <SELECT NAME="bgColor"> <OPTION VALUE="beige">Beige <OPTION VALUE="antiquewhite">Antique White <OPTION VALUE="goldenrod">Goldenrod <OPTION VALUE="lime">Lime <OPTION VALUE="powderblue">Powder Blue <OPTION VALUE="slategray">Slate Gray </SELECT> </TR> <TR> <TD>Select a text color: <SELECT NAME="textColor"> <OPTION VALUE="black">Black <OPTION VALUE="white">White <OPTION VALUE="navy">Navy Blue <OPTION VALUE="darkorange">Dark Orange <OPTION VALUE="seagreen">Sea Green <OPTION VALUE="teal">Teal </SELECT> </TR> <TR> <TD>Select "Welcome" heading font point size: <SELECT NAME="h1Size"> <OPTION VALUE="12">12 <OPTION VALUE="14">14
